Flat Roof Rafter Detail

The flat roof design detail can go up against different style that when nitty gritty right can ooze a cutting edge feel.

Flat roof rafter detail.

Flat roofs aren t architecturally logical as rain and snow will shed much more quickly off a sloped roof. While this article focuses on configurations we also have a very cool set of illustrations showcasing the different parts anatomy of roof trusses. It is not ideal for snow or heavy rain but modern materials and proper drainage have helped. In many cases with purchased house plans the details of the roof construction including rafter design are included.

I joist construction details. For concentrated vertical load transfer capacity see 1d. Of course you don t need to live in a modern house to deal with a flat roof. Such as joist header or rafter.

A flat roof has a slope of 1 8 per foot to 2 12. Other roof protrustions sothat notiiing obstructs tiieflow ofair from eave to ridge. Another common design in the northeast is the saltbox which is a gable roof with one longer side. Cold roof insulation between rafters wnapor barrier on warm side below orw sheatiiing roofing roofing 2 x 8 sleepers notched for vent aligned wi rafters flashing over rooang fascia sheatiiing 2 x 4 sleepers aligned w rafters provide.

1b apa rim board one. A roof dormer may be gabled as in our sketch above or it may be a low slope or flat roof. Yet for historic modern style buildings like this old house s cambridge tv project flat roofs are at the core of the architecture meant to reflect the broad horizontal lines of the natural landscape. A rafter that runs diagonally between the roof ridge and the top of the wall plate forming a hipped roof.

Think of a flattened hip roof. First off the flat roof design detail is an extremely basic direct and utilitarian design every single current trademark. Notice that the hip rafter forms what. The basic construction of a flat roof starts with roofing timber that is laid across two upright items usually two walls.

In our rafter type sketch above the hip rafters are drawn in blue. If you build a flat roof try to have it slope in multiple directions to drains or gutters. In addition to floor and roof framing details this guide includes recommendations for cantilevers. These days cut ups or roofs with a lot of valleys dormers and other features are increasingly popular.

That will help you remember certain factors and details to build the best possible flat roof. Definition of hip rafter. Main features flat roof design detail.